초록 ▼

A cell phone is equipped with a 2D optical sensor, enabling a variety of applications. For example, such a phone may also be provided with a digital watermark decoder, permitting decoding of steganographic data on imaged objects. Movement of a phone may be inferred by sensing movement of an imaged p

A cell phone is equipped with a 2D optical sensor, enabling a variety of applications. For example, such a phone may also be provided with a digital watermark decoder, permitting decoding of steganographic data on imaged objects. Movement of a phone may be inferred by sensing movement of an imaged pattern across the optical sensor's field of view, allowing use of the phone as a gestural input device through which a user can signal instructions to a computer-based process. A variety of other arrangements by which electronic devices can interact with the physical world are also detailed, e.g., involving sensing and responding to digital watermarks, bar codes, RFIDs, etc.

대표청구항 ▼

1. In a wireless telephony handset including a microphone, a modulator, and an RF amplifier, the handset serving to receive audio and transmit an RF signal conveying audio modulation, an improvement comprising a 2D optical sensor producing optical data, a lens for imaging an object onto the sensor,

1. In a wireless telephony handset including a microphone, a modulator, and an RF amplifier, the handset serving to receive audio and transmit an RF signal conveying audio modulation, an improvement comprising a 2D optical sensor producing optical data, a lens for imaging an object onto the sensor, and a watermark decoder for decoding plural bit identifier data conveyed by a digital watermark on the object.2. A method of using a wireless telephone handset that includes a microphone, a 2D optical sensor, and a wireless interface, the wireless interface being capable of transmitting an RF signal conveying information corresponding to audio sensed by said microphone, the method comprising:presenting in a field of view of said 2D sensor a physical object bearing a digital watermark pattern, the pattern representing a plural-bit watermark payload; and decoding from the physical object said plural-bit watermark payload. 3. The method of claim 2 wherein the physical object is a card.4. The method of claim 2 wherein the card is a playing card.